So, at least for me and a lot of Hunter mains I know/am friends with, the changes to Nightstalker from D1 to D2 weakened them and killed most of their synergy and/or feeling. With Way of the Wraith, some synergy was brought back, but it could be better, and I think I've figured out how to fix that: Why give Trappers Keen Scout and Pathfinders Lockdown, it'd be more fitting if they were switched so that Trappers have Lockdown and Pathfinders have Keen Scout. Second, the Melees. In the heat of combat, Crouching and getting a Precision kill is viable, but giving them Vanish in Smoke would increase synergy/viability, which would leave Pathfinders to take Corrosive Smoke.